MiniCssExtractPlugin 公共路径不起作用

我在用MiniCssExtractPlugin在我的 React 应用程序中延迟加载 CSS 文件。

我给了publicPath选项MiniCssExtractPlugin但它并没有采用这个选项值，而是采用output.publicPath option.

config: {
  test: /\.(css)?$/,
  use: [{
    loader : MiniCssExtractPlugin.loader,
    options : {
      publicPath : '../'
    }},
    'css-loader'
    ],
}

好像你的不是唯一一个感到困惑的人 https://github.com/webpack-contrib/mini-css-extract-plugin/issues/44#issuecomment-379059788, 52 条评论关于如何做到这一点。的问题html-webpack-plugin 中的 publicPath https://github.com/jantimon/html-webpack-plugin/issues/234是相似的并且有帮助。然而，最大的帮助来自于npm run ejecting 出创建反应应用程序 https://github.com/facebook/create-react-app并检查webpack.config.js files.

TL;DR：您需要在插件构造函数中指定保存路径。

new MiniCssExtractPlugin({
  // Options similar to the same options in webpackOptions.output
  filename: "assets/css/[name].css",
}),

您可能需要重新考虑模块输出逻辑。 避免在中指定嵌套路径module.output.path e.g. public/assets/js，而是设置root目录：public并设置嵌套filename key: assets/js/[name].js.

然后您可以指定一个publicPath主要在module.output你会用的子域或 CDN https://github.com/webpack/docs/wiki/configuration#outputpublicpath etc.

最终的完整配置对我有用：

const path = require('path');
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const HtmlWebpackPlugin = require('html-webpack-plugin');

const publicPath = '/';

module.exports = {
  entry: './_src/_js/index.js',
  output: {
    filename: 'assets/js/[name].js',
    path: path.resolve(__dirname, 'dist'),
    publicPath: publicPath,
  },
  module: {
    rules: [
      {
        test: /\.css$/,
        use: [
          {
            loader: MiniCssExtractPlugin.loader,
          },
          'css-loader',
        ],
      },
      {
        test: /\.(png|svg|jpg|gif)$/,
        use: [
          {
            loader: 'file-loader',
            options: {
              name: 'assets/images/[name].[ext]',
            },
          },
        ]
      },
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: ['babel-loader','eslint-loader']
      },
    ],
  },
  plugins: [
    new MiniCssExtractPlugin({
      // Options similar to the same options in webpackOptions.output
      // both options are optional
      filename: "assets/css/[name].css",
    }),
    new HtmlWebpackPlugin({
      inject: true,

    }),
  ]
};